2001 Jaguar XJ8 - Page 2 - Answered Questions & Fixed issues

Low fuel pressure

If I understand your statement correctly, noise but the engine will not "turn over." This sounds like the starter motor is running but the gear that engages the flywheel gear-teeth is not making contact at all or is moving into too-slight contact, just enough to make a lot of noise. In U.S. cars the device on the stater motor that moves the starter gear forward is called a "Bendix." As the starter motor starts to turn, the Bendix shoves a small gear forward, engaging teeth on the flywheel which spins the flywheel to start the engine. If the Bendix is sticking or has failed the gear will not move forward at all or not far enough. Sarting with the least cost first, I'd look toward a "sticky" bendix. Try using a light penetrating oil or perhaps, WD-40 to free-up the Bendix.

If will not start when does it squeal?

There are only a few ways coolant can get out of the cooling system. First check where the hoses connect to the radiator to make sure they are completely dry. Then check directly under radiator to make sure it isn't damp. Sometimes the radiator cap will go bad and allow some coolant to leave. You can replace the radiator cap relatively cheap. The very worst way you can be loosing coolant is thru a blown head gasket. The coolant slowly leaks into the cylinder and is burned. You would have to go to a mechanic to have this verified.

If it is cranking fine but not firing then you have a fuel problem. Maybe the fuel pump, filter, injectors...etc.

You will have to remove the trim around the radio, could be easy, and then again it might not. Will be able to unbolt the radio after you remove the trim. Should not require any more than a couple screwdivers and a good range of metric sockets

I would start by checking to see if the signal is being pulsed to the coil and/or the injector. If those are good, check the compression. If you need further help, reach me via phone at https://www.6ya.com/expert/forrest_f5a3e9d21691ce99

is the engine cranking? if so poss flooded! you may have the old nicosyl coated liner engine? check your engine no./or vin.no. at your local jaguar dealer, common problem, or you need to check for fuel delivery, ie. pump/relay.e.t.c.if its ok check ign.+ve at ign coils

Well, the battery and starter contacts should be good then, and the engine is free. I'd check the earth strap connections from battery to engine, and frame to engine or battery.

you need to get the dtc codes out of the ecm to aid diagnosis could be lots of things, air leaks in the induction are a common cause,

gear box under car attached to engine

hooked up to the rear of engine gear box is your transmission

this warning can be flagged by lots of reasons you really need to get the fault codes out of the engine control module but the common causes i have found after working on these cars for a few years are air leaks after the mass air flow sensor, sticking throttle butterfly in the throttle body, the throttle itself, lamda sensors, and knock sensors, and because the temp gauge does not give you a true temp reading the engine could be overheating the clue to that is the rad fan always running

level and filler plug is on the rh side side of gearbox on underside near rear of box 8mm allen key has to be checked with engine running after working through gears ending up in p or n @30 to 50 degrees c be carefull you dont burn your hands on the exhaust use the correct fluid you are supposed to use jag diagnostic equipment to check oil temp but it is a wide margin so other means may be used

check for fault codes in ecm at a guess knowing this model well it will have logged a code for heated oxy sensor faults sometimes you clear the codes and they dont come back.if the light comes back then one or more sensors are faulty more than likely open cicuit heater element in the sensors there are 2 or 4 sensors on that engine depending on market spec. the norm is 4 you can compare the sensors with a multimeter to locate the faulty ones ideally you need a wiring diagram to do this. genuine jaguar ones are expensive i have changed all 4 in the past to cure this problem at a cost off over 1000 pounds the other likley causes are throttle body problems and air leaks but you normally get restricted performance warning showing hope this helps been a jag tech for almost 50years

dose it say random miss fire ?? what is the code?

coolant level switches are always on or near the top of the rezervoir.

get a rebuilt or used transmission. Jaguar says you don't have to change trans fluid because it should last the "life of the trans" which means it will die just like everything else. Fluid change will do no good. I just went thru this.

Try to use a good quality "Foam Cleaner" - don't use too much - ; it might be due to dust or dirt. Leave if for a few minutes, and then tap gently on the ashtray cover. Repeat the process if needed, then wipe clean. This may solve the problem, as I had a similar case two days back but with the ashtray of one of the rear doors on my 1999 XJ8.. and this solved it.. also I used same trick to make the top of the ashtray compartment in the center console opens more freely.

Lean report from right side bank #1 oxygen sensorReplace both sides upstream sensors if over 100,000 milesThey slow down & set a mil lampLeave the rear monitors